Journal article
Effects of amylose content, autoclaving, parboiling, extrusion, and post-cooking treatments on resistant starch content of different rice cultivars
Australian Journal of Agricultural Research, Vol.57(12), pp.1291-1296
2006
Abstract
Experiments were conducted to examine the effects of parboiling, extrusion, rice variety, rice:water ratio, and cooling after cooking on the resistant starch (RS) content of rice. When uncooked the medium-grain rice (Amaroo) contained less amylose (18.8 g/100 g, P = 0.001), higher fast digestible starch (FDS) content (21.7 g/100 g, P < 0.001), and less RS (0.1 g/100 g, P < 0.001) than the long-grain rice (Doongara) (25.6, 15.9, 0.4, respectively). Parboiled rice had the highest FDS (33.9 g/100 g) and RS (0.72 g/100 g) contents, with an amylose content of 25.4 g/100 g. The effects of rice type, rice:water ratio (1:1 or 1:2 w/w), and post-cooking interventions (freshly dried or dried after cooling for 24 h at 4°C) on the RS content of rice cooked in an autoclave were examined. The RS contents were significantly different among the rice types (0.6, 1.4, 3.7 g/100 g for Amaroo, Doongara, and parboiled rice, respectively, P < 0.001). Decreasing the rice:water ratio (1:2) and cooling (24 h at 4°C) after cooking significantly increased the RS content (P < 0.001). Extrusion decreased the RS content in the high RS rice only (0.42-0.16 g/100 g, P = 0.02). The results indicate that parboiling rice, and the use of a higher-amylose-content rice, a lower rice:water ratio, and cooling after cooking all increase RS content, whereas extrusion decreases the RS content of rice.
Details
- Title
- Effects of amylose content, autoclaving, parboiling, extrusion, and post-cooking treatments on resistant starch content of different rice cultivars
- Authors/Creators
- J.C. Kim (Author/Creator) - Murdoch UniversityB.P. Mullan (Author/Creator) - Agriculture and FoodD.J. Hampson (Author/Creator) - Murdoch UniversityJ.R. Pluske (Author/Creator) - Murdoch University
- Publication Details
- Australian Journal of Agricultural Research, Vol.57(12), pp.1291-1296
- Publisher
- CSIRO
- Identifiers
- 991005541418607891
- Copyright
- © CSIRO 2006.
- Murdoch Affiliation
- School of Veterinary and Biomedical Sciences
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.85 Food Science & Technology
- 3.85.99 Cereal Starch Properties
- Web Of Science research areas
- Agriculture, Multidisciplinary
- ESI research areas
- Agricultural Sciences